Compared to traditional sensors, metasurface sensors offer higher sensitivity and superior optical response. All-dielectric materials have broad prospects for refractive index sensing due to low ohmic loss. Here, we propose a double-rod all-dielectric nanostructure that exhibits a high-quality factor (high-Q) Fano resonance in the mid-infrared band. This resonance is highly sensitive to changes in the refractive index of the surrounding medium. Analysis of the electromagnetic field distribution and multipole moment decomposition, it is demonstrated that the resonance is driven by a toroidal dipole (TD) and a magnetic quadrupole (MQ). We systematically characterized the sensing performance of the proposed structure. The results show that it achieves a sensitivity of up to 1337.1 nm/RIU and a high figure of merit (FOM) of 1238. In the mid-infrared band, the structure exhibited a high Q factor of 18544. Moreover, its reflection spectrum in this band could be effectively tuned by adjusting the geometric parameters of the metasurface. Finally, investigations at different incident angles reveal that the resonant peak exhibits a distinct blueshift as the angle increases. Moreover, the structure shows a selective response to the polarization state, demonstrating excellent polarization sensitivity. This work shows that high-performance optical sensors can be fabricated using simple processes, thereby providing a fresh design framework and theoretical basis for the sensor community.
{"title":"High-Q mid-infrared refractive index sensor based on Fano resonance in an all-dielectric double-rod structure","authors":"Wenwen Wang, Fuming Yang, Wenwen Sun, Zhe Wu, Xiaoyan Shi, Junying Liu, Yuetao Liu, Jizheng Geng, Xintong Wei, Xiangtao Chen, Shijia Zhu, Zhongzhu Liang","doi":"10.1016/j.optcom.2026.132975","DOIUrl":"10.1016/j.optcom.2026.132975","url":null,"abstract":"<div><div>Compared to traditional sensors, metasurface sensors offer higher sensitivity and superior optical response. All-dielectric materials have broad prospects for refractive index sensing due to low ohmic loss. Here, we propose a double-rod all-dielectric nanostructure that exhibits a high-quality factor (high-Q) Fano resonance in the mid-infrared band. This resonance is highly sensitive to changes in the refractive index of the surrounding medium. Analysis of the electromagnetic field distribution and multipole moment decomposition, it is demonstrated that the resonance is driven by a toroidal dipole (TD) and a magnetic quadrupole (MQ). We systematically characterized the sensing performance of the proposed structure. The results show that it achieves a sensitivity of up to 1337.1 nm/RIU and a high figure of merit (FOM) of 1238. In the mid-infrared band, the structure exhibited a high Q factor of 18544. Moreover, its reflection spectrum in this band could be effectively tuned by adjusting the geometric parameters of the metasurface. Finally, investigations at different incident angles reveal that the resonant peak exhibits a distinct blueshift as the angle increases. Moreover, the structure shows a selective response to the polarization state, demonstrating excellent polarization sensitivity. This work shows that high-performance optical sensors can be fabricated using simple processes, thereby providing a fresh design framework and theoretical basis for the sensor community.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"608 ","pages":"Article 132975"},"PeriodicalIF":2.5,"publicationDate":"2026-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-27DOI: 10.1016/j.optcom.2026.132962
Chenlong Dai, Yang Wang, Jiantai Dou
Accurate axial distance calibration is pivotal for high-precision ptychography. The conventional dichotomy-based approach (dPIE) suffers from slow convergence and computationally intensive preprocessing. Here, we introduce a hybrid framework: A linear model analytically reconstructs high-fidelity initial object/probe distributions, integrated with an optimized dichotomous scheme for axial refinement. This strategy enables single-iteration processing at each candidate distance without preprocessing overhead, which effectively overcomes key limitations of dPIE. Validated on standard and biological specimens, the framework can drastically reduce the correction time. By leveraging total variation to exponentially narrow the search interval, the rapid convergence is achieved with minimal computation. This method provides an efficient solution for axial distance calibration in ptychographic systems.
{"title":"Fast calibration method of axial distance error in ptychography based on linear model for initial object reconstruction","authors":"Chenlong Dai, Yang Wang, Jiantai Dou","doi":"10.1016/j.optcom.2026.132962","DOIUrl":"10.1016/j.optcom.2026.132962","url":null,"abstract":"<div><div>Accurate axial distance calibration is pivotal for high-precision ptychography. The conventional dichotomy-based approach (dPIE) suffers from slow convergence and computationally intensive preprocessing. Here, we introduce a hybrid framework: A linear model analytically reconstructs high-fidelity initial object/probe distributions, integrated with an optimized dichotomous scheme for axial refinement. This strategy enables single-iteration processing at each candidate distance without preprocessing overhead, which effectively overcomes key limitations of dPIE. Validated on standard and biological specimens, the framework can drastically reduce the correction time. By leveraging total variation to exponentially narrow the search interval, the rapid convergence is achieved with minimal computation. This method provides an efficient solution for axial distance calibration in ptychographic systems.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132962"},"PeriodicalIF":2.5,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-27DOI: 10.1016/j.optcom.2025.132805
Xiang Sui , Ying Shang , Sheng Huang , Wenan Zhao , Xiaohan Qiao , Guangqiang Liu , Chunmei Yao , Shouling Liu , Na Wan , Xianggui Kong , Hong Zhao , Fengming Mou , Zhengying Li , Weitao Wang , Chen Wang , Gangding Peng
{"title":"Corrigendum to “Coherent fading suppression method in the COTDR system based on multi-band filtering” [Opt. Commun. 583 (2025) 131696]","authors":"Xiang Sui , Ying Shang , Sheng Huang , Wenan Zhao , Xiaohan Qiao , Guangqiang Liu , Chunmei Yao , Shouling Liu , Na Wan , Xianggui Kong , Hong Zhao , Fengming Mou , Zhengying Li , Weitao Wang , Chen Wang , Gangding Peng","doi":"10.1016/j.optcom.2025.132805","DOIUrl":"10.1016/j.optcom.2025.132805","url":null,"abstract":"","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132805"},"PeriodicalIF":2.5,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-27DOI: 10.1016/j.optcom.2026.132966
Maoni Chen , Aimin Liu , Shangde Zhou , Jianqiu Cao , Qi Zhang , Zhihe Huang , Zilun Chen , Zefeng Wang , Jinbao Chen
A 1.5-kW large-core step-index Yb-doped fiber amplifier operating near 980 nm is firstly demonstrated, to the best of our knowledge, by means of broadening the signal bandwidth to suppress in-band amplified spontaneous emission (ASE) around 980 nm. The signal bandwidth covering from 974 nm to 980 nm is achieved using a home-made seed oscillator with a dual low-reflectivity fiber Bragg grating (LR-FBG) configuration. The record 1.546-kW output power was achieved with a slope efficiency of 71.5 % (with respect to the launched pump power) which should also be the highest achieved by the step-index double-cladding Yb-doped fiber. The power ratio of in-band ASE was suppressed to below 1 %, while the ASE around 1030 nm was also 27.8-dB suppressed. This amplifier can strongly drive the power up-scaling of high-power fiber lasers and amplifiers as high-power cladding-pumping source, and thus can have significant impact on application fields involving high-power fiber lasers and amplifiers.
{"title":"Demonstration of 1.5-kW large-core step-index Yb-doped fiber amplifier near 980 nm","authors":"Maoni Chen , Aimin Liu , Shangde Zhou , Jianqiu Cao , Qi Zhang , Zhihe Huang , Zilun Chen , Zefeng Wang , Jinbao Chen","doi":"10.1016/j.optcom.2026.132966","DOIUrl":"10.1016/j.optcom.2026.132966","url":null,"abstract":"<div><div>A 1.5-kW large-core step-index Yb-doped fiber amplifier operating near 980 nm is firstly demonstrated, to the best of our knowledge, by means of broadening the signal bandwidth to suppress in-band amplified spontaneous emission (ASE) around 980 nm. The signal bandwidth covering from 974 nm to 980 nm is achieved using a home-made seed oscillator with a dual low-reflectivity fiber Bragg grating (LR-FBG) configuration. The record 1.546-kW output power was achieved with a slope efficiency of 71.5 % (with respect to the launched pump power) which should also be the highest achieved by the step-index double-cladding Yb-doped fiber. The power ratio of in-band ASE was suppressed to below 1 %, while the ASE around 1030 nm was also 27.8-dB suppressed. This amplifier can strongly drive the power up-scaling of high-power fiber lasers and amplifiers as high-power cladding-pumping source, and thus can have significant impact on application fields involving high-power fiber lasers and amplifiers.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132966"},"PeriodicalIF":2.5,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-27DOI: 10.1016/j.optcom.2025.132779
Xiang Sui , Ying Shang , Sheng Huang , Wenan Zhao , Xiaohan Qiao , Guangqiang Liu , Chunmei Yao , Shouling Liu , Na Wan , Xianggui Kong , Hong Zhao , Fengming Mou , Zhengying Li , Weitao Wang , Chen Wang , Gangding Peng
{"title":"Corrigendum to “Coherent fading suppression method in the COTDR system based on multi-band filtering” [Opt. Commun. 583 (2025) 131696]","authors":"Xiang Sui , Ying Shang , Sheng Huang , Wenan Zhao , Xiaohan Qiao , Guangqiang Liu , Chunmei Yao , Shouling Liu , Na Wan , Xianggui Kong , Hong Zhao , Fengming Mou , Zhengying Li , Weitao Wang , Chen Wang , Gangding Peng","doi":"10.1016/j.optcom.2025.132779","DOIUrl":"10.1016/j.optcom.2025.132779","url":null,"abstract":"","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132779"},"PeriodicalIF":2.5,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-24DOI: 10.1016/j.optcom.2026.132958
Cui Zhang , Xinjun Gao , Ajiaikebaier Wulamu , Weibing Gan , Ai Zhou , Congcong Qin , Pei Lv
Natural gas pipelines are critical infrastructure for urban energy supply, but leak-induced vibration signals are often obscured by environmental noise and coupling from supporting structures, which reduces the accuracy of detection and localization. This paper proposes a denoising framework that integrates a weak fiber Bragg grating (WFBG) array with deep learning. Specifically, the method builds a VMD-fused multi-branch structure, in which U-Net and gated recurrent unit (GRU) subnetworks are used for feature extraction and are trained under the Noise2Noise (N2N) framework, thereby enabling denoising without clean reference signals. It effectively achieves extraction and reconstruction of both high- and low-frequency features. Experiments are conducted on a steel pipeline leakage monitoring platform with synchronous multi-zone acquisition (Zone 1 to Zone 9). Training pairs are constructed using data from different time instants within the same zone, and cross-zone consistency is validated under different noise and coupling conditions. For physical interpretability, this paper provides an order-of-magnitude prediction of the first bending mode of a supported span to explain the dominant low-frequency peak and its spatial variation. Under representative operating conditions, the proposed method achieves , , , time-domain , and frequency-domain error , outperforming baseline methods. Overall, the framework preserves key frequency-band characteristics related to leakage while suppressing noise, and demonstrates robust cross-zone generalization for distributed monitoring.
{"title":"Vibration signal denoising method for pipeline leakage based on WFBG and deep learning","authors":"Cui Zhang , Xinjun Gao , Ajiaikebaier Wulamu , Weibing Gan , Ai Zhou , Congcong Qin , Pei Lv","doi":"10.1016/j.optcom.2026.132958","DOIUrl":"10.1016/j.optcom.2026.132958","url":null,"abstract":"<div><div>Natural gas pipelines are critical infrastructure for urban energy supply, but leak-induced vibration signals are often obscured by environmental noise and coupling from supporting structures, which reduces the accuracy of detection and localization. This paper proposes a denoising framework that integrates a weak fiber Bragg grating (WFBG) array with deep learning. Specifically, the method builds a VMD-fused multi-branch structure, in which U-Net and gated recurrent unit (GRU) subnetworks are used for feature extraction and are trained under the Noise2Noise (N2N) framework, thereby enabling denoising without clean reference signals. It effectively achieves extraction and reconstruction of both high- and low-frequency features. Experiments are conducted on a steel pipeline leakage monitoring platform with synchronous multi-zone acquisition (Zone 1 to Zone 9). Training pairs are constructed using data from different time instants within the same zone, and cross-zone consistency is validated under different noise and coupling conditions. For physical interpretability, this paper provides an order-of-magnitude prediction of the first bending mode of a supported span to explain the dominant low-frequency peak and its spatial variation. Under representative operating conditions, the proposed method achieves <span><math><mrow><mi>SNR</mi><mo>=</mo><mn>20</mn><mo>.</mo><mn>32</mn><mspace></mspace><mi>dB</mi></mrow></math></span>, <span><math><mrow><mi>PSNR</mi><mo>=</mo><mn>31</mn><mo>.</mo><mn>71</mn><mspace></mspace><mi>dB</mi></mrow></math></span>, <span><math><mrow><mi>SSIM</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>929</mn></mrow></math></span>, time-domain <span><math><mrow><mi>MSE</mi><mo>=</mo><mn>0</mn><mo>.</mo><mn>00581</mn></mrow></math></span>, and frequency-domain error <span><math><mrow><msub><mrow><mi>Err</mi></mrow><mrow><mi>f</mi></mrow></msub><mo>=</mo><mn>1</mn><mo>.</mo><mn>99985</mn></mrow></math></span>, outperforming baseline methods. Overall, the framework preserves key frequency-band characteristics related to leakage while suppressing noise, and demonstrates robust cross-zone generalization for distributed monitoring.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132958"},"PeriodicalIF":2.5,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-24DOI: 10.1016/j.optcom.2026.132960
Gaurav Verma , Wenqi He
The Optical Phase Retrieval (OPR) technique represents an innovative encoding approach that enforces constraints in both the Fourier and spatial domains to generate a phase-only representation of data. Discarding amplitude information inherently achieves data compression in the Fourier domain while preserving essential structural details. This paper presents an efficient and secure video encryption framework integrating OPR with multimodal chaotic-map modulation for enhanced robustness and confidentiality. In the proposed method, video sequences are decomposed into individual frames, which are encoded into phase-only distributions using an iterative OPR algorithm. These encoded frames are further encrypted through multimodal chaotic maps, including Logistic and Henon systems, ensuring high key sensitivity, strong diffusion, and nonlinear randomness. The integrated framework achieves efficient data compression, secure transmission, and robustness against perturbations. The numerical results demonstrate that the proposed scheme achieves a large key space and strong sensitivity, and offers efficient computation time complexity, also effectively showing reliable performance against video processing attacks such as compression, rotation, and blurring. Comprehensive experiments under diverse degradations — such as Gaussian noise, salt-and-pepper noise, and partial occlusion — demonstrate that the proposed system provides high-quality reconstruction during decryption. Statistical evaluations using metrics such as MSE, PSNR, SSIM, and entropy confirm excellent decryption fidelity and strong resistance to standard cryptographic attacks. Furthermore, the proposed system exhibits real-time processing capabilities, making it a suitable choice for next-generation optical video encryption and secure multimedia communication applications.
{"title":"Optical video encryption using iterative phase retrieval and multimodal chaotic maps","authors":"Gaurav Verma , Wenqi He","doi":"10.1016/j.optcom.2026.132960","DOIUrl":"10.1016/j.optcom.2026.132960","url":null,"abstract":"<div><div>The Optical Phase Retrieval (OPR) technique represents an innovative encoding approach that enforces constraints in both the Fourier and spatial domains to generate a phase-only representation of data. Discarding amplitude information inherently achieves data compression in the Fourier domain while preserving essential structural details. This paper presents an efficient and secure video encryption framework integrating OPR with multimodal chaotic-map modulation for enhanced robustness and confidentiality. In the proposed method, video sequences are decomposed into individual frames, which are encoded into phase-only distributions using an iterative OPR algorithm. These encoded frames are further encrypted through multimodal chaotic maps, including Logistic and Henon systems, ensuring high key sensitivity, strong diffusion, and nonlinear randomness. The integrated framework achieves efficient data compression, secure transmission, and robustness against perturbations. The numerical results demonstrate that the proposed scheme achieves a large key space and strong sensitivity, and offers efficient computation time complexity, also effectively showing reliable performance against video processing attacks such as compression, rotation, and blurring. Comprehensive experiments under diverse degradations — such as Gaussian noise, salt-and-pepper noise, and partial occlusion — demonstrate that the proposed system provides high-quality reconstruction during decryption. Statistical evaluations using metrics such as MSE, PSNR, SSIM, and entropy confirm excellent decryption fidelity and strong resistance to standard cryptographic attacks. Furthermore, the proposed system exhibits real-time processing capabilities, making it a suitable choice for next-generation optical video encryption and secure multimedia communication applications.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132960"},"PeriodicalIF":2.5,"publicationDate":"2026-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-23DOI: 10.1016/j.optcom.2026.132946
Xiaolei Kuang , Xijun Ren
This study conducts a comprehensive benchmarking analysis of neural-network-based quantum state tomography on a four-photon entangled system, systematically evaluating the performance of three variational architectures: the positive-real ansatz, the pure-state ansatz, and the purification ansatz. Our experimental findings illustrate the following: the positive-real ansatz attains a fidelity exceeding 99% for Z-basis measurements, though its performance is highly sensitive to the choice of measurement basis; the pure-state ansatz, which is based on a restricted Boltzmann machine, achieves a fidelity of over 99% while utilizing merely 31% of the conventional measurement bases, thereby demonstrating remarkable measurement efficiency; in contrast, the purification ansatz exhibits notable fragility during optimization and high sensitivity to noise. This work offers essential guidance for the selection of suitable neural-network architectures in quantum state tomography and their potential extension to large-scale quantum systems.
{"title":"Neural-network quantum state tomography in four-photon entanglement systems","authors":"Xiaolei Kuang , Xijun Ren","doi":"10.1016/j.optcom.2026.132946","DOIUrl":"10.1016/j.optcom.2026.132946","url":null,"abstract":"<div><div>This study conducts a comprehensive benchmarking analysis of neural-network-based quantum state tomography on a four-photon entangled system, systematically evaluating the performance of three variational architectures: the positive-real ansatz, the pure-state ansatz, and the purification ansatz. Our experimental findings illustrate the following: the positive-real ansatz attains a fidelity exceeding 99% for Z-basis measurements, though its performance is highly sensitive to the choice of measurement basis; the pure-state ansatz, which is based on a restricted Boltzmann machine, achieves a fidelity of over 99% while utilizing merely 31% of the conventional measurement bases, thereby demonstrating remarkable measurement efficiency; in contrast, the purification ansatz exhibits notable fragility during optimization and high sensitivity to noise. This work offers essential guidance for the selection of suitable neural-network architectures in quantum state tomography and their potential extension to large-scale quantum systems.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132946"},"PeriodicalIF":2.5,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-23DOI: 10.1016/j.optcom.2026.132907
Xuefeng Shi , Peng Lang , Boyu Ji , Zhenlong Zhao , Yang Xu , Xiaowei Song , Jingquan Lin
Non-diffracting Olver surface plasmon polaritons (SPPs) exhibit unique characteristics of anti-disturbance and self-bending propagation, effectively reducing diffraction loss and extend the propagation distance of the main lobe. In this work, we design a polarization- and wavelength-sensitive composite nanoarray structure that enables flexible and active control of the excitation and bending direction of the Olver SPP main lobe in four distinct directions. Specifically, changing the polarization state of the incident light enables tuning the directional excitation of the Olver SPP main lobe, while varying the incident wavelength allows the precise control of its excitation direction along the upper or lower part of the structure. Quantitative analysis based on the extinction ratio demonstrates the excellent directional excitation capability of the proposed structure. Furthermore, the diffraction-free and self-healing properties of Olver SPPs are verified through the extraction of amplitude distribution curves along their propagation trajectories with the introduction of obstacles. These findings provide a promising strategy for advancing applications in optical tweezers, information routing, and plasmonic functional devices.
{"title":"Selective multichannel excitation of Olver surface plasmon polaritons in composite nanoarray structures","authors":"Xuefeng Shi , Peng Lang , Boyu Ji , Zhenlong Zhao , Yang Xu , Xiaowei Song , Jingquan Lin","doi":"10.1016/j.optcom.2026.132907","DOIUrl":"10.1016/j.optcom.2026.132907","url":null,"abstract":"<div><div>Non-diffracting Olver surface plasmon polaritons (SPPs) exhibit unique characteristics of anti-disturbance and self-bending propagation, effectively reducing diffraction loss and extend the propagation distance of the main lobe. In this work, we design a polarization- and wavelength-sensitive composite nanoarray structure that enables flexible and active control of the excitation and bending direction of the Olver SPP main lobe in four distinct directions. Specifically, changing the polarization state of the incident light enables tuning the directional excitation of the Olver SPP main lobe, while varying the incident wavelength allows the precise control of its excitation direction along the upper or lower part of the structure. Quantitative analysis based on the extinction ratio demonstrates the excellent directional excitation capability of the proposed structure. Furthermore, the diffraction-free and self-healing properties of Olver SPPs are verified through the extraction of amplitude distribution curves along their propagation trajectories with the introduction of obstacles. These findings provide a promising strategy for advancing applications in optical tweezers, information routing, and plasmonic functional devices.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132907"},"PeriodicalIF":2.5,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-23DOI: 10.1016/j.optcom.2026.132939
Leitao Wang, Zhiyong Xu, Jianhua Li, Jingyuan Wang, Cheng Li, Jiyong Zhao, Yang Su
Existing networking protocols for ultraviolet communication networks suffer from insufficient reliability, along with shortcomings in ensuring message transmission continuity and controlling failure rates. This paper proposes the enhanced ultraviolet large-scale communication networking (eUVLSCN) protocol. Firstly, a message-based simulation model is established, and network performance evaluation criteria centered on message transmission rate and message transmission success rate are put forward. Secondly, the frame structure is optimized, and message fields are added to ensure continuous message transmission. Meanwhile, an adaptive message compression algorithm is designed to dynamically adjust the compression ratio based on the message size and the transmission distance between source and destination nodes. Simulation results show that compared with the existing networking protocols for large-scale mobile ultraviolet communication networks, the eUVLSCN protocol achieves a higher message transmission success rate, enhances reliability and flexibility, and provides new insights for network performance optimization.
{"title":"A networking protocol for UV communication networks based on adaptive message compression","authors":"Leitao Wang, Zhiyong Xu, Jianhua Li, Jingyuan Wang, Cheng Li, Jiyong Zhao, Yang Su","doi":"10.1016/j.optcom.2026.132939","DOIUrl":"10.1016/j.optcom.2026.132939","url":null,"abstract":"<div><div>Existing networking protocols for ultraviolet communication networks suffer from insufficient reliability, along with shortcomings in ensuring message transmission continuity and controlling failure rates. This paper proposes the enhanced ultraviolet large-scale communication networking (eUVLSCN) protocol. Firstly, a message-based simulation model is established, and network performance evaluation criteria centered on message transmission rate and message transmission success rate are put forward. Secondly, the frame structure is optimized, and message fields are added to ensure continuous message transmission. Meanwhile, an adaptive message compression algorithm is designed to dynamically adjust the compression ratio based on the message size and the transmission distance between source and destination nodes. Simulation results show that compared with the existing networking protocols for large-scale mobile ultraviolet communication networks, the eUVLSCN protocol achieves a higher message transmission success rate, enhances reliability and flexibility, and provides new insights for network performance optimization.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"607 ","pages":"Article 132939"},"PeriodicalIF":2.5,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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